Mold for concrete posts.



PATENTED APR. 23, 1907.

J. P. DONOVAN. MOLD POR CONCRETE POSTS.

APPLICATION FILED APB. 9,1906.

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A TTOHNEYS PATENTED APR. 23, 1907.

J. P. DONOVAN. MOLD FOR CONCRETE POSTS.

APPLICATION FILED APR.9, 1906.

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ATTORNEYS UNITED sTATEsW JAMES PETER DONOVAN, OF GEORGETOWN, KENTUCKY.

MOLD FOR CONCRETE POSTS.

Specication of Letters Patent.

Patented April 23, 1907.

Application filed April 9,1906. Serial No. 310,671.

To all whom it may concer/1,:

Be it known that I, JAMES PETER DoNo- VAN, a citizen of the UnitedStates, and a resident of Georgetown, in the county of Scott and Stateof Kentucky, have invented a new and Improved Mold for Concrete Posts,of which the following is a full, clear, and exact descri tion.

The object of t 1e invention is to provide a new and improved mold formaking concrete posts such as are more especially used in theconstruction offences, the mold being simple and durable in constructionand arranged to permit the production of posts in an economical manner,the posts combiningT strength with lightness, and not likely to warp orcrack.

"The invention consists of novel features and parts and combinations ofthe same which will be more 'fully described hereinafter and the'npointed out in the claims.

A'practical embodiment of the invention is represented in theaccompanying drawings forming a part of this specification, in whichsimilar characters of reference indicate corresponding parts in all theviews.

Figure 1 is a plan view of the improvement Fig. 2 is a side elevation ofthe same; Fig. 3 is a sectional plan view of the same on the line 3-3ofv Fig. 2. Fig. 4 is a longitudinal sectional side elevation of theimprovement on the line 4--4 of Fig. 1,; Fig. 5 1s a similar view of thesame on the line 5 5 of Fig. 3 Fig. 6 is a transverse section of theimprovement on the line 6-6 of Fig. 3; Fig. 7 is a similar view of thevsame on the line 7 7 of Fig. 3; Fi s. 8 and 9 are ers ectiveviews of theend b ocks of the Inold 5l `ig. 10 is an enlarged sectional sideelevation of one of the core-holding bolts; Fig. 11 is a perspectiveview of the reinforced concrete post made by the mold; and Fig. 12 is aperspective view of a portion of one of the reinforcing rods.

The sides A and A' of the mold are held spaced apart by end blocks B andB removably fastened in place by transverse bolts O extending throughthe sides A, A and the end blocks B, B', as will be readily understoodby reference to Fig. 8. The inner face of the end blocks B (see Fig. S),is formed with a ta ering ofl set B2, and the inner face of the ot erend block B' is provided with a sunken or a recessed panel B3, 'as Ishown in Fig. 9. Cores D are set in a space between the sides A, A andspaced apart, as

l shown in Fig. 3, and in older to properly i hold the cores D inposition transversely exl tending core-holding bolts E are employed,engaging the sides A, A', each of the said bolts E being 4made insections and having a rod E', (see Fig. 10) provided with sleeves E2 andE, of which the sleeve E2 is secured to the rod E and the sleeve E3screws in a nut E, which also screws onto the outer threaded end of therod E. The sleeves E2 and E:s are of such a length that the inner e-ndsare spaced from each other, and the said inner ends of the sleeves E2and E3 abut against opposite faces of the core D, to hold the latterm'proper position between the sides A and A. When it is desired toremove the cores D, as hereinafter more fully described, then the nutsE4 are unscrewed to allow of removing the sections of the bolts E fromthe mold a'nd the post formed in the mold. Each core D isprovided at thetop with a handle D', adapted to be taken hold of by an operator forconveniently pulling the core D out lof the mold.

Through the sides A, A'l and through the cores D, also extend removabletransverse rods F (see Fig. 3), and between the sides A and A' at thetop thereof, 'lits a board G having openings G' in alignment with theupper ends of the cores D, to allow removal ofthe latter through thesaid openings G' after the post is formed in the samel The post H formedin the mold is provided with cover openings H', extending from side toside, and the post is also provided with transverse apertures H2 adaptedto be engaged by the fence rails to hold the same in place on the post.The lwer end ol: the post H is formed with a beveled oil'set Il (seeFig. 4) owing to the panel Bl in the end block B', and in the upper endol' the post ll is formed a recess or a sunken panel H owing to theo'llset B2 formed on the end block B. The front end and rear sides ofthe post II are provided near their upper ends with recesses or sunkenpanels H5 owing to ofl'sets A2 and A3, formed in the inner faces of thesides A, A', as plainly indicated in Fig. 3. The post H is reinforced inthe direction of its length by metallic reinforcing bars I and I'provided at their ends with anchoring heads I2 prefer; ably in the formof 'Iiat disks (see Fig. 12), for holdiner the reinforcing bars againstmovement 1n the concrete material.

In using the mold the connected sides A,

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.\., and blocks B, B', are placed on a suitable smooth surface,preferably on oiled paper, to

prevent sticking of the concrete material.

concrete material to the top thereof and,

preferably by the use of suitable hooks or other tools temporarilyengaged with the rods I. Willen this has been done, more concretematerial is placed into the mold so as to embed the bars l, and when themold is nearly-hlled the second Set of bars I is placed in position andthen the mold is completely filled with cement material so that thebarsY I are also embedded in the material. Then the mold is completelyfilled with cement material, the board G is placed in position on thetop of the concrete material and then the board is pressed down toinsure firm taniping of the material in the mold. After the concretematerialis set, the bolts E, as well as the rods F, are removed and thenthe odres D are withdrawn up through the openings G in the board G, sothat the concrete material is not disturbed on the withdrawal of thecores D, as the Walls of the openings G form firm guides for the lcoresD during their with- After the cores have been withdrawn, the board G isremoved and then the bolts C are disengaged from the sides A, A and theend blocks B, B, to allow of removing 1ghe sides A, A as Well as the endblocks B,

From the foregoing it will be seen that the mold is composed ofcomparatively few parts, which can be readily assembled for receivingthe conc-rete material, and can be readily removed after the concretematerial is set and the post is finished. It Will also be noticed thatby the arrangement described suitable tying apertures H2, are formed inthe post, and having the cover openings H the post is renderedcomparatively light, without reducing the strength thereof. By havingthe odset H3 at the bottom of the post, the latter is not likely to turnin the post hole, and by providing the upper end of the post with panelsH5, a highly ornamental appearance is given to the post.

Having thus described my invention, I claim as new and desirel to secureby Letters Patent: s

1. A mold for making concrete posts, comprising sides, end blocksfonspacing the sides, transverse bolts' for connecting the end blockswith the said sides, cores set in the space 'between the sides,core-holding bolts engaging the said sides and cores, to hold the latterin positionfand removable transverse core rods arranged at oppositesides of the The operator now f core-holding bolts and extending throughthe sides and cores, to form apertures in the post for the attachment ofthe fence wires.

2. A mold for making concrete posts, coin,- prising sides, end blocksfor spacing the sides, one of the end blocks having its inner face'recessed and the other having its inner face provided with an ofl'set,transverse boltsfor connecting the end blocks with the said sides, coresset-in the space between the sides, and core-holding bolts extendingtransversely through the sides and cores and provided with means forengaging the sides of the cores to hold the cores in position.

3. A mold for making concrete posts, comprising sides, end blocks forspacing the sides, the inner faces of the sides being provided withlongitudinally extending rectangular offsets having beveled edges, oneof the said end blocks having its inner face provided with a rectangularrecess or panel having beveled edges, and the other end block hav" ingits inner face provided with a rectangular offset having beveled edges,means for connecting the end blocks with the sides, cores set in thespace between the sides, and core-holding bolts extending transverselythrough the sides and cores and provided with means for engaging thesides of the cores to hold the latter in position.

v' 4. A mold for making concrete posts, comprising sides, end blocks forspacing the sides, transverse bolts for connecting the end blocks withthe said sides, cores set in the space between the sides, andcore-holding bolts engaging the said sides and cores, to hold the latterin position, the said core-holding bolts being made in sections andhaving a reduced portion extending through the cores and shoulders.abutting against the sides of the cores.

5. In a mold, sides, end blocks, a core set in the space between thesides, and a coreholding bolt engaging the sides, the said `boltcomprising a rod extending through the core, and spaced sleeves on therod having their IOO IIO

inner ends abutting against opposite faces-of the core.

6. A mold for making concrete posts, comprising sides, end blocks forspacing the sides, means for connecting the end blocks with the saidsides, cores set 1n the space between the sides, core rods extendingthrough-the sides and cores to form apertures in the post1 coreholdingbolts engaging the said sides and cores, to hold the latter in position,the said core-holding bolts being made in sections and space between thesides, core-holding bolts l the said sleeves extending through the sides15 engaging the said sides and cores, the said core-holdingr bolts eaehconsisting of a rod f extending through zi eore, and spaced sleeves onthe rod having their inner ends abutting against opposite faces of thecore, und u talnping board itted between the sides and having openingsfor the removal of the smid cores.

8. In a mold, sides, end blocks, a eore set in the s ace between thesides, und a coreholding olt for holding the core in position, the saidbolt comprising a rod extending through the core7 spaced sleeves on therod,

and having' their inner ends abutting;l against opposite fau-es ol' thecore, one oil said sleeves being seeured to the rod, und :1 nut in whichthe outer end ol" the other sleeve screws, the said nut serewing?T onthe end of the rod.

ln testimony whereof l have signed my name to this specification in thepresenee of two subseribing witnesses.

JAMES PETER DO'XOYAN.

vWitnesses".

BRN A. L xlu, l. M. SCRIVNER.

